A3 to A5 Enveloped · UK direct mail

What is an A3 folded to A5 enveloped mailing?

It is a full A3 sheet, printed both sides, folded down to A5 and posted inside an envelope. You get far more room than a postcard or a letter — a poster-sized spread that unfolds on the kitchen table — while it still arrives as a small, personally addressed envelope. It suits anything with a lot to show: a full range, a map, a price list or a seasonal brochure-style piece.

What actually arrives through the letterbox?

An addressed envelope containing a folded sheet that opens out to A3, printed edge to edge on both sides.

Two-sided A3 sheet folded to A5 and enveloped. Confirmed orderable through the supplier API by Stannp on 22 September 2026. Printed on Not stated in the supplied design guide, addressed to a named person at a verified UK address, and posted through our print and post partner — never dropped door to door.

How does Lenny design it?

You describe the business and the offer. Lenny writes the copy, produces the artwork at the exact size the printer requires, and shows you both what it looks like and where every protected area sits.

01

Brief

Tell Lenny your business, your offer and who you want to reach. Bring your website or a menu if you have one.

02

Concept

Copy and layout produced at 426 × 303 mm, with the address area kept clear. Labelled a concept until a file is checked.

03

Verified print file

The file is measured against the printer's specification before it can be approved. Nothing is called print-ready until it passes.

04

Your approval

You approve, or ask for changes in plain words. Nothing is printed or posted without a person approving it.

Bringing your own artwork? Upload it and it is measured against the same specification. If it does not fit, you get a plain list of what to change — or we repair it and send it back for your approval.

What are the exact print measurements?

These come from our print partner's own published design guide, revision 2026-09-20. The same numbers drive Lenny's designs, our file checks and the order itself, so nothing can drift.

420 × 297 mm trimYour creative
Front

Full A3 campaign creative, composed around the centre fold and kept inside the published safe zone.

420 × 297 mm trimAddress box189 × 101 mm
Reverse

Supporting creative with the supplier address area kept clear.

426 × 303 mm artwork to supply3 mm bleed per edge414 × 291 mm safe zone5031 × 3579 px at 300 DPI
Download the original Stannp A3 to A5 Enveloped Guide

What can you choose on a a3 to a5 enveloped?

Exactly these, and nothing else. Anything marked fixed is set by the printer, not by us.

  • PrintingSingle-sided or Double-sidedYou choose
  • PostageUK economy or UK first classYou choose
  • Pages1 to 25 pagesYou choose
  • EnvelopeC5 windowed envelope, or C4 for an extra chargeYou choose
  • Confidential handlingCan be addedYou choose
  • Extra insertsCan be addedYou choose

Who is a a3 to a5 enveloped right for?

Ranges and catalogues

A garden centre sending a folded seasonal range with a map and opening times to 2,000 nearby homes.

Events and open days

An independent school posting an open-day spread with a site plan to families in three postcode districts.

Multi-service businesses

A builder showing six services with photographs, rather than squeezing them onto a card.

Who do we send it to?

Two routes, both addressed mail.

We build the audience

Tell Lenny the area and the kind of household or business you want, and we build a targeted list of UK addresses for the mailing.

Address data integration not connected yet — audience counts are shown as unavailable rather than estimated.

You bring your own list

Upload a spreadsheet of customers. Every row is checked for a usable street address and postcode, duplicates are collapsed, and anything unpostable is skipped with a plain reason rather than printed.

How much does a a3 to a5 enveloped mailing cost?

One price per item covers printing, finishing, the envelope and UK postage. These examples are read live from the same price list used at checkout.

QuantityPer itemTotal
250£2.45£612.50
1,000£2.45£2,450.00
5,000£2.45£12,250.00
10,000£2.45£24,500.00

The price per item is the same at every quantity, and first class, confidential handling and larger envelopes are priced as upgrades. Your confirmed price stays fixed.

What happens after you order?

01

Proof

A test copy is produced from your approved artwork. Nothing is posted and no postage is spent at this stage.

02

Human approval

A person at AutoLetters checks the order and the file against the specification before anything goes live.

03

Print and post

Items are printed, finished, enveloped and handed to Royal Mail, with each item recorded against your order.

04

Responses recorded

QR codes, codes and redemptions are recorded against the campaign as an attributed ratio — never presented as profit or ROI.

Honest limits

A3 to A5 Enveloped questions, answered

How big is it when it opens out?

A full A3 spread, printed both sides. The exact artwork size, fold position and protected address area are shown on this page, taken from the printer's own guide.

How much does an A3 folded mailing cost?

One price per item covers printing, folding, the envelope and UK postage. The worked examples on this page are read live from our current price list.

Can Lenny design the whole spread?

Yes. Lenny composes both sides around the centre fold, keeps the address area clear and shows you the real print file before anything is approved.

Can I supply my own artwork?

Yes. Upload a print-ready file and it is measured against the same specification, with a plain list of anything that needs changing.

Not sure which fits? Ask Lenny or compare every format on the pricing page.